Independent Samples t Test in SPSS
Group Statistics 

Groups 
N 
Mean 
Std. Deviation 
Std. Error Mean 

Minutes 
Embouchure Cream 
1 
55.0000 
. 
. 
No Cream 
1 
31.0000 
. 
. 
Levene's Test for Equality of Variances 
ttest for Equality of Means 

F 
Sig. 
t 
df 
Sig. (2tailed) 
Mean Difference 
Std. Error Difference 
95% Confidence Interval of the Difference 

Lower 
Upper 

Minutes 
Equal variances assumed 
. 
. 
. 
0 
. 
24.00000 
. 
. 
. 
Equal variances not assumed 
. 
. 
. 
24.00000 
. 
. 
. 
Problem Set 3.14: Independent Samples t Test
Criterion: Identify IV, DV, and hypotheses, and evaluate the null hypothesis for an independent samples t test.
Data: Use the information from Problem Set 3.13.
Instruction: Complete the following:
a. Identify the IV and DV in this study.
b. State the null hypothesis and the directional (onetailed) alternative hypothesis.
c. Can you reject the null hypothesis at α = .05? Explain why or why not.